The normal ranges for PT/INR results are: 11 to 13.5 seconds. INR of 0.8 to 1.1. INR of 2.0 to 3.0 if you’re taking warfarin. (There are some conditions for which a higher or lower target PT range is desired.) Abnormal PT results. A high PT test result or INR level means it takes more time than usual for your blood to clot.

Jan 23, 2024 · INR values are important because they help determine how well a person is responding to warfarin, one of the most commonly prescribed anticoagulants used to prevent blood clots. For people on warfarin, the reference range of values for PT/INR is 2 to 3 seconds.

May 1, 2023 · International normalized ratio (INR) is the preferred test of choice for patients taking vitamin K antagonists (VKA). It can also be used to assess the risk of bleeding or the coagulation status of the patients. Patients taking oral anticoagulants are required to monitor INR to adjust the VKA doses because these vary between patients.

Mar 16, 2023 · A normal INR range is 0.8 to 1.1 if you’re not taking anticoagulant medications. If you’re taking these medications, your target INR range may be between 2 and 3.5. If your INR is too high, you’re at increased risk of bleeding.

Dec 3, 2024 · In people without health conditions, an INR of 1.1 or below is considered typical. An INR range of 2.0 to 3.0 is generally an effective therapeutic range for people taking warfarin for certain conditions. These conditions include atrial fibrillation or a blood clot in the leg or lung.

May 28, 2021 · What is the normal value of INR in a blood test? The normal range of INR depends on the patient, if he is under oral anticoagulant therapy or not. If the patient is not under anticoagulant therapy, normal range is: Men: 0.9 - 1.1 Women: 0.9 - 1.1. If the patient is under anticoagulant therapy such as (warfarin or acenocumarol), normal range is ...

Jun 8, 2024 · INR is a standardized measure of PT, ensuring consistency in results across different laboratories. The normal range for INR is around 0.8 to 1.2. Higher INR values suggest a slower clotting time and an increased risk of bleeding.

Normal INR Range. The normal INR range varies depending on whether the individual is on anticoagulant therapy or not. Typically, the following ranges apply: Not on Anticoagulants – 0.8 – 1.2; On Warfarin for Atrial Fibrillation or Blood Clots – 2.0 – 3.0; On Anticoagulants for Mechanical Heart Valves – 2.5 – 3.5; Significance of ...

Jul 4, 2024 · Normal Range: For healthy individuals not on anticoagulant therapy, the typical INR range is 0.8 to 1.2. Therapeutic Range for Anticoagulation: For patients on warfarin, the target INR range is usually between 2.0 and 3.0.

Normal Range. The international normalized ratio is a lab-derived, standardized number that may differ between institutes. Normal PT: 11 – 13 seconds. (If not taking any blood thinners) Critical value: >20 seconds for patients not on anticoagulants. Normal INR: <1.1; Warfarin INR: 2-3